background image

 

 

6

Adjustable Items   
 

Direct access key   

Items 

Description 

Preset 

Remark 

“0” 

VG2 

Adjust VG2 voltage 

 

 

“1” 5/6HSH 

Horizontal 

shift 

ON 

 

 

 

 

 

“2” 5/6VSL 

Vertical 

slop 

21 

 5/6VAM 

Vertical 

amplitude 

45 

 5/6SCL 

S-correction 

20 

 5/6VSH 

Vertical 

shift 

38 

 

5/6VOF 

OSD Vertical offset 

38 

 

HOF* 

OSD Horizontal offset 

20 

 

 

 

 

 

“3” 

RED 

Black level offset R 

32 

 

GRN 

Black level offset G 

32 

 

WPR 

White point R 

31 

 

WPG 

White point G 

31 

 

WPB 

White point B 

31 

 

YDFP 

Y-Delay for PAL 

 

 

 

YDFN 

Y-Delay for NTSC 

 

 

 YDAV 

Y-Delay 

for 

AV 

 

 

 

 

 

 

 

“4” TOP 

AGC 

Take-over 

point 

27 

 VOL 

Volume 

36 

 

 

9860 

Gain control for TDA9860

 

59  

 

HDOL 

Cathode drive level 

31 

 

 AGC 

IF 

AGC 

speed 

 

 

 VG2B 

VG2 

Brightness 

 

 

 

IFO 

Off-set IF demodulator 

 

 

 

 

 

 

 

“5” 

Picture preset 1 

 

 

 

 0CON 

Listen: 

Contrast 

 0BRI 

Listen: 

Brightness 

 0COL 

Listen: 

Colour 

50 

 0SHP 

Listen: 

Sharpness 

50 

 1CON 

Soft: 

Contrast 

45 

 1BRI 

Soft: 

Brightness 

45 

 1COL 

Soft: 

Colour 

50 

 1SHP 

Soft: 

Sharpness 

50 

 

 

 

 

 

“6” 

Picture preset 2 

 

 

 

 2CON 

Standard: 

Contrast 

70 

 2BRI 

Standard: 

Brightness 

50 

 2COL 

Standard: 

Colour 

50 

 2SHP 

Standard: 

Sharpness 

60 

 3CON 

Dynamic: 

Contrast 

85 

 3BRI 

Dynamic: 

Brightness 

60 

 3COL 

Dynamic: 

Colour 

60 

 3SHP 

Dynamic: 

Sharpness 

80 

 

 

 

 

 

“7” OP1-OP9 

 

 

 

 

 

 

 

 

“8” INIT 

Initialize 

EEPROM 

 

 

 

 

 

 

 

“9” 

XMIN 

“no signal”osd the horizon 
leftmost position 

 

 

 

XMAX 

“no signal”osd the horizon 
rightmost position 

 

 

 

YMIN 

“no signal”osd the vertical 
leftmost position 

 

 

 

YMAX 

“no signal”osd the vertical 
rightmost position 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for NS-F20C

Page 1: ...COLOUR TELEVISION SERVICE MANUAL Models NS F20C Edition 2007 3 1...

Page 2: ...CONTENTS 1 Safety precautions 3 2 TV block diagram 4 3 Replacement of memory IC 5 4 Service adjustment 5 5 ICs functional description 10 6 Test point waveform 10 7 All ICs voltages 10 2...

Page 3: ...t check high voltage by drawing an arc Use a high voltage meter or a high voltage probe with a VTVM Discharge the picture tube before attempting meter connection by connecting a clip lead to the groun...

Page 4: ...4 2 Block diagram TDA8377 PS N3 2 series with mono intercarrier sound demodulator...

Page 5: ...ata adjustment of corresponding factory menus Press EXIT key to exit factory mode Focus adjustment 1 Receive a crosshatch signal 2 While watching the screen adjust the FOCUS VR on the FBT to make the...

Page 6: ...ode drive level 31 AGC IF AGC speed VG2B VG2 Brightness IFO Off set IF demodulator 5 Picture preset 1 0CON Listen Contrast 0 A 0BRI Listen Brightness 0 A 0COL Listen Colour 50 A 0SHP Listen Sharpness...

Page 7: ...1 Enable 0 EA Bit 2 FMWS 1 Enable 0 EA Bit 1 RESERVE 1 Enable 1 EA Bit 0 AVL 1 Enable 1 EA 3 OP3 Bit Function Description Preset Remark Bit 7 TDA8377 1 Enable 1 EA Bit 6 16 9 1 Enable 0 EA Bit 5 RESER...

Page 8: ...I 2 C bus data line TUNING 4 tuning Voltage Vt PWM output KEY 5 Control keys input SYSTEM 6 TV system control VOL 7 Sound Volume control PWM output MUTE 8 Sound mute output VSSC P 9 Digit ground for...

Page 9: ...supply of TV processor 3 3 V VPE 55 Ground VDDC 56 Digital supply to core 3 3 V OSCGND 57 Oscillator ground supply XTALIN 58 Crystal oscillator input XTALOUT 59 Crystal oscillator output RESET 60 Grou...

Page 10: ...DA8377 PIN38 5Vpp 0 9Vpp CRT KB CRT KG CRT KR 95Vpp 95Vpp 95Vpp H H H 7 IC voltages TDA8377 PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 V 0 3 8 3 6 3 3 3 5 4 4 5 1 1 8 0 0 18 0 17 0 2 3 8 5 3 PIN 17 18...

Page 11: ...5 1 3 3 5 TDA8357 PIN 1 2 3 4 5 6 7 8 9 V 0 8 0 7 16 6 9 0 43 7 2 0 3 7 2 AN 7522N PIN 1 2 3 4 5 6 7 8 9 10 11 12 V 10 4 4 0 4 4 2 75 1 4 0 1 4 0 35 4 4 0 4 4 24C08 PCF8598 PIN 1 2 3 4 5 6 7 8 V 0 0...

Page 12: ...screen Fig 3 8 Move the deflection yoke forward and fix the position of the deflection yoke so that the whole screen will become green 9 Insert the wedge to the top side of the deflection yoke so that...

Page 13: ...nvergence DYNAMIC CONVERGENCE ADJUSTMENT 13 1 Move the deflection yoke up and down and overlap lines in the periphery Fig 2 2 Move the deflection yoke left to right and overlap the lines in the periph...

Page 14: ...TZJ5 1B DZ102 63V 0 1 F C101 1 6W 68K R261 1N4148 VD217 1 6W 9 1K R260 1 6W 1K R227 1 6W 9 1K R262 B4 12V C214 104 SYSTEM 1W 33 R110 LGA0203 100 L102 SDA SCL 1 6W 22 R103 SPEAKER SPEAKER INPUT INPUT 2...

Page 15: ...Sincere Forever 15...

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